Chlorate explosive.



OSWALD SILBERRAD, 0F BUGKHURST HILL, ENGLAND.

CHLORATE EXPLOSIVE.

No Drawing.

Specification of Letters ratent.

Patented Oct. 8, 1912.

Application filed June 15, 1911. Serial No. 633,406.

To all whom it may concern:

Be it known that I, OSWALD SILBERRAD, a

"subject oif'"the King of Great Britain and Ireland, and residing atSilberrad Research Laboratory, Buckhurst Hill, in the county of Essex,England, have invented a certain new and useful Improved ChlorateExplosive, of which the following is a specification.

This invention relates to explosives of the kind containing an oxidizingsalt such as potassium chlorate and a nitro body such as nitro-toluene.

The object of this invention is to provide an improved explosive of thisnature and more particularly one which shall be plastic,

owerful, cheap and of exceptional staility.

Explosives consisting of a chlorate and a jelly of a nitro compound andsoluble nitrocellulose have been proposed but these owing to their lackof stability have not come into use. The explosive according to thepresent invention belongs to this class but is however free of thisdisadvantage.

This invention consists in an explosive containing 65 to 70 parts ofpotassium chlorate, 12 to 13 parts of nitrotoluene, 6 to 7 parts ofdinitrotoluene, 6 to 7 parts of nitronaphthalene, 5 to 6 parts ofwood'meal and 0.5 to 2.5 parts of soluble nitrocellulose.

In car ying this invention into effect according to one form the variousnitro and dinitro compounds are incorporated together, the solublenitrocellulose added thereto and the mixture warmed until gelatinizationis complete. The wood meal and oxidizing substance are now incorporatedinto the mass when the substance may be pressed into cartridges in theusual way.

In carrying my invention into efiect it is obvious that I may substitutethe nitrotoluene (nitro methyl benzene) either partly or wholly byitsanalogue nitro-benzene inasmuch as the product in both cases is toall intents and purposes identical.

An explosive composed of the ingredients set out above and prepared inthe manner described has been found to possess remarkable stability,power, plasticity and efficiency in general.

Having now described my invention what I claim as-new and desire tosecure by Letters Patent is 1. A blasting explosive containing potassiumchlorate 65 to 70 parts, nitro-toluene 12 to 13 parts, dinitrotoluene 6to 7 parts, nitronaphthalene 6 to 7 parts, wood meal 5 to 6 parts andsoluble nitro cellulose 0.5 to 2.5 parts; as set forth.

2. A plastic blasting explosive composed of nitro compounds gelatinizedby soluble nitro-cellulose and having an oxidizing sub-- stance admixedtherewith in which the jelly is composed of 12 to 13 parts ofnitrotoluene, 6 to 7 parts of dinitrotoluene, 6 to 7 parts ofnitronaphthalene, and 0.5 to 2.5 parts of soluble nitro-cellulose, 65 to70' parts of potassium chlorate and 5 to 6 parts of woo meal beingincorporated in said jelly; as set forth. I

3. The method of producing a plastic blasting explosive consisting inmixing together 12 to 13 parts of nitro toluene and 6 to 7 parts ofdinitrotoluene, and 6 to 7 parts of nitronaphthalene, adding thereto 0.5to 2.5 parts of soluble nitro-cellulose, producing gelatinization ofthis mixture by the action of heat and incorporating with the resultantproduct 65 to 70 parts of potassium chlorate and 5 to 6 parts of woodmeal; as set forth.

In testimony whereof I have signed my OSWALD SILBERRAD.

Witnesses:

' EDGAR VVACE, GERALD Burr.

